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AIM
4/3/14
7−1−68
Meteorology
(11)
Beginning/Ending of Precipitation/
TSTMS.
(12)
TSTM Location MVMT.
(13)
Hailstone Size (GR).
(14)
Virga.
(15)
VRB CIG (height).
(16)
Obscuration.
(17)
VRB Sky Condition.
(18)
Significant Cloud Types.
(19)
Ceiling Height 2nd Location.
(20)
PRESFR PRESRR.
(21)
Sea−Level Pressure.
(22)
ACFT Mishap (not transmitted).
(23)
NOSPECI.
(24)
SNINCR.
(25)
Other SIG Info.
(c) Additive and Automated Maintenance
Data.
(1)
Hourly Precipitation.
(2)
3− and 6−Hour Precipitation Amount.
(3)
24−Hour Precipitation.
(4)
Snow Depth on Ground.
(5)
Water Equivalent of Snow.
(6)
Cloud Type.
(7)
Duration of Sunshine.
(8)
Hourly Temperature/Dew Point
(Tenths).
(9)
6−Hour Maximum Temperature.
(10)
6−Hour Minimum Temperature.
(11)
24−Hour Maximum/Minimum
Temperature.
(12)
Pressure Tendency.
(13)
Sensor Status.
PWINO
FZRANO
TSNO
RVRNO
PNO
VISNO
Examples of METAR reports and explanation:
METAR KBNA 281250Z 33018KT 290V360
1/2SM R31/2700FT SN BLSN FG VV008 00/M03
A2991 RMK RAE42SNB42
METAR
aviation routine weather
. . . . . .
report
KBNA
Nashville, TN
. . . . . . . .
281250Z
date 28
th
, time 1250 UTC
. . . . . .
(no modifier)
This is a manually generated
. .
report, due to the absence of
“AUTO” and “AO1 or AO2”
in remarks
33018KT
wind three three zero at one
. . . . .
eight
290V360
wind variable between
. . . . . .
two nine zero and three six
zero
1/2SM
visibility one half
. . . . . . . .
R31/2700FT
Runway three one RVR two
. . .
thousand seven hundred
SN
moderate snow
. . . . . . . . . . .
BLSN FG
visibility obscured by
. . . . .
blowing snow and fog
VV008
indefinite ceiling eight
. . . . . . .
hundred
00/M03
temperature zero, dew point
. . . . . . .
minus
three
A2991
altimeter two niner niner one
. . . . . . . .
RMK
remarks
. . . . . . . .
RAE42
rain ended at four two
. . . . . . .
SNB42
snow began at four two
. . . . . . .
METAR KSFO 041453Z AUTO VRB02KT 3SM
BR CLR 15/12 A3012 RMK AO2
METAR
aviation routine weather
. . . . . .
report
KSFO
San Francisco, CA
. . . . . . . .
041453Z
date 4
th
, time 1453 UTC
. . . . . .
AUTO
fully automated; no human
. . . . . . .
intervention
VRB02KT
wind variable at two
. . . .
3SM
visibility three
. . . . . . . . .
BR
visibility obscured by mist
. . . . . . . . . .
CLR
no clouds below one two
. . . . . . . . .
thousand
15/12
temperature one five, dew
. . . . . . . . .
point one two
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